| | 1 | #!/bin/bash |
| | 2 | |
| | 3 | # Desc: Template function to write data supplied as argument |
| | 4 | |
| | 5 | yell() { echo "$0: $*" >&2; } # Yell, Die, Try Three-Fingered Claw technique; # Ref/Attrib: https://stackoverflow.com/a/25515370 |
| | 6 | die() { yell "$*"; exit 111; } |
| | 7 | try() { "$@" || die "cannot $*"; } |
| | 8 | appendArgTar(){ |
| | 9 | # Desc: Writes first argument to temporary file with arguments as options, then appends file to tar |
| | 10 | # Usage: writeArg "$(echo "Data to be written.")" [name of file to be inserted] [tar path] [temp dir] ([cmd1] [cmd2] [cmd3] [cmd4]...) |
| | 11 | # Input: arg1: data to be written |
| | 12 | # arg2: file name of file to be inserted into tar |
| | 13 | # arg3: tar archive path (must exist first) |
| | 14 | # arg4: temporary working dir |
| | 15 | # arg5+: command strings (ex: "gpsbabel -i nmea -f - -o kml -F - ") |
| | 16 | # Output: file written to disk |
| | 17 | # Example: decrypt multiple large files in parallel |
| | 18 | # appendArgTar "$(cat /tmp/largefile1.gpg)" "largefile1" $HOME/archive.tar /tmp "gpg --decrypt" & |
| | 19 | # appendArgTar "$(cat /tmp/largefile2.gpg)" "largefile2" $HOME/archive.tar /tmp "gpg --decrypt" & |
| | 20 | # appendArgTar "$(cat /tmp/largefile3.gpg)" "largefile3" $HOME/archive.tar /tmp "gpg --decrypt" & |
| | 21 | |
| | 22 | # Depends: bash 5 |
| | 23 | |
| | 24 | # Set file name |
| | 25 | if ! [ -z "$2" ]; then FILENAME="$2"; else yell "ERROR:Not enough arguments."; exit 1; fi |
| | 26 | |
| | 27 | # Check tar path is a file |
| | 28 | if [ -f "$3" ]; then TAR_PATH="$3"; else yell "ERROR:Tar archive arg not a file."; exit 1; fi |
| | 29 | |
| | 30 | # Check temp dir arg |
| | 31 | if ! [ -z "$4" ]; then TMP_DIR="$3"; else yell "ERROR:No temporary working dir set."; exit 1; fi |
| | 32 | |
| | 33 | # Set command strings |
| | 34 | if ! [ -z "$5" ]; then CMD1="$5"; else CMD1="tee /dev/null "; fi # command string 1 |
| | 35 | if ! [ -z "$6" ]; then CMD2="$6"; else CMD2="tee /dev/null "; fi # command string 2 |
| | 36 | if ! [ -z "$7" ]; then CMD3="$7"; else CMD3="tee /dev/null "; fi # command string 3 |
| | 37 | if ! [ -z "$8" ]; then CMD4="$8"; else CMD4="tee /dev/null "; fi # command string 4 |
| | 38 | |
| | 39 | # Debug |
| | 40 | yell "CMD1:$CMD1" |
| | 41 | yell "CMD2:$CMD2" |
| | 42 | yell "CMD3:$CMD3" |
| | 43 | yell "CMD4:$CMD4" |
| | 44 | # Write to temporary working dir |
| | 45 | echo "$1" | $CMD1 | $CMD2 | $CMD3 | $CMD4 > "$TMP_DIR"/"$FILENAME"; |
| | 46 | |
| | 47 | # Append to tar |
| | 48 | try tar --append --directory="$TMP_DIR" --file="$TAR_PATH" "$FILENAME"; |
| | 49 | |
| | 50 | } # Append Bash var to file appended to Tar archive |
| | 51 | |
| | 52 | #==BEGIN sample code== |
| | 53 | myFile="/tmp/$(date +%s)..original" |
| | 54 | echo "how are you doing?" > "$myFile" |
| | 55 | myVAR="$(cat $myFile)" |
| | 56 | writeArg "$myVAR" "$myFile..LOUD_CHILD" "tee /tmp/cloneityclone " "tr '[:lower:]' '[:upper:]'" |
| | 57 | #==END sample code== |
| | 58 | |
| | 59 | # Author: Steven Baltakatei Sandoval |
| | 60 | # License: GPLv3+ |
projects / BK-2020-03.git / blame_incremental